The report said Richmond’s River Rock had been flooded with $13.5 million in $20 bills in July 2015. High rollers, mainly from China, were using underground banks to access large amounts of cash from suspected illicit activities. It also said high rollers were receiving shipments of cash to the casino or just off the property late at night.

MNP’s report found that staff at Great Canadian Gaming’s River Rock fostered “a culture accepting of large bulk cash transactions,” but there was lax detection by both the casino and the few BCLC investigators assigned to work there.

Authorities could have their hands full beginning Sept. 29 when the Parq Vancouver casino opens next to B.C. Place Stadium. The successor to Edgewater Casino is the flagship of Paragon Gaming’s $600 million development on B.C. Pavilion Corporation land. The opening comes on the eve of China’s National Day Golden Week, when visits by high rollers from the Middle Kingdom naturally increase to Vancouver.